The geographical situation potentially conducive to truffle farming in France

The geographical situation, the climate and the aptitude of the soil for the truffle (physical and chemical quality), are fundamental factors for the success of a Truffière.

The climate

It takes a sufficient but not excessive alternation of seasons, where rainfall, temperature, insolation, have a good distribution.


The truffle likes on plateaus and gentle slopes. Avoid shallows, combes, sinkholes that are very often subject to spring freezes and large amounts of water from runoff.
These accumulations of water can be detrimental to the development of the truffle.
The ideal orientation to be favored will be south, south-east, southwest, because the sun should be maximum for Tuber melanosporum. On the other hand, for Tuber uncinatum, orientation is of little importance.

 Pedoclimatic zone potentially conducive to truffle farming in France: click on the map to enlarge.

(Registered model card ROBIN, reproduction prohibited.)

 Legend of soils:

  • Soils favorable to T.melanosporum and T.uncinatum: limestone bedrock, pH> 7 and clays <35%.
  • Soils favorable to T.uncinatum and sometimes T.melanosporum (if clays7 and clays <35% to 60%.
  • Soils unfavorable to T.melanosporum and T.uncinatum: non-limestone bedrock and / or pH60% and / or hydromorphic soils (poor drainage).
  • No soil or no data